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Eric_Lawrence
MicrosoftJoined Apr 09, 2019
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Re: Edge: DNS Flush
Many things seem like they should be "simple" but are quite complicated if you look at the full set of components involved. Which DNS resolver are you configured to use? Beyond the DNS cache in the browser, the OS maintains its own cache of DNS resolutions. Did you clear that? Do you have a NETLOG showing a cached DNS record being used? Did you already have active connections to the hostname in question in the browser's keep-alive pool?Re: [FIXED] Problem: Can't open unsafe ports on Edge insider
wasilis92 The only thing you really should need to disable is Startup Boost -- that's the one that keeps a background Edge process around. Efficiency Mode and Sleeping tabs do NOT keep extra processes. See https://textslashplain.com/2022/01/05/edge-command-line-arguments/#:~:text=An%20argument%20I%20tried%20didn%E2%80%99t%20seem%20to%20do%20anything%3F%20Why%20not%3F for discussion. As for why Edge uses many processes-- Chromium-based browsers use many processes for security and reliability reasons. Each process can have its own sandbox, with restrictions locked down as tight as possible for that process' job. Similarly, if a utility process crashes, the browser does not crash and the utility can be restarted.Re: Edge: DNS Flush
There's nothing wrong with sending that set of Cache-Control headers; they'll be treated as |no-store|. Having said that, Cache-Control headers don't apply to every layer of caching in the browser, so they're not a complete guarantee against reuse of a response. But on a full-page navigation, they should be effective. The thing you want to look at in the netlog is the DNS transaction entries.Re: Edge: DNS Flush
Menoblack That should not be the case, no. If anything, it should be the opposite (if you have a web page entirely in the cache, or if you have a serviceworker installed by the target site, your browser might not need to connect to the server at all). If you have a NetLog (https://textslashplain.com/2020/01/17/capture-network-logs-from-edge-and-chrome/) from your failing scenario, you could look to see what precisely is happening with DNS resolutions.
